Hi Andrew,
Welcome to the Forum..and its good to hear about your fabulous holiday here with your girlfriend.
In a long distance relationships trust and honesty is what matters most. You said your GF is an ex-Bar girl, you chose her so you have to accept her as she is, but as you said she already change her career, so its best for you to leave all her past behind. Important is the present and the future.
Good luck to you.